The European Union must face another big threat in very short period of time. There is another item on the threats list – Brexit – the withdrawal of the United Kingdom, one of the three biggest member states, from the European Union. This threat is beginning to have very realistic shape when some top British politicians, for example Boris Johnson, very popular mayor of London, or Mick Jagger, the front man of Rolling Stones, take sides with the sympathizers of the withdrawal.

The surprise victory of Prime Minister David Cameron at the United Kingdom's general election last weekend has led to a chorus of concerned voices about the chances of a 'Brexit' from the European Union.